How can I create an upcoming page, is this the same as a teaser?

Hi Chelle! Here's a quick link for you to the tool that a lot of folks are using called Carrd — there are five different types of templates, but since you're looking for a coming soon page, I linked you to the form template: https://carrd.co/dashboard/add#form! If you don't like this, then customizing is easy. It's also very cost-effective.